Web Reference: The SQL SUM function is a powerful tool for aggregating numeric data, enabling you to calculate totals, analyze spending, or summarize quantities. By mastering its use with WHERE, GROUP BY, joins, and DISTINCT, and applying it in scenarios like our retail database, you’ll derive actionable insights. The SQL SUM () Function The SUM() function is used to calculate the total sum of values within a specified numeric column. The SUM() function ignores NULL values in the column. The following SQL returns the sum of the Quantity field in the "OrderDetails" table: In this lesson, you will learn how to use the SQL `SUM` function to perform aggregate calculations. We will cover the basic syntax, explore practical examples, and guide you through a step-by-step query to calculate the total number of match events per season using a soccer match dataset.
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